pleister



H. w. PLE|STER.. CONCRETE INSERT,

APPLICATION FILED OCT. (KL 1918.

1 224,846. A Patented Dec. 16,1919.

, 2 SHEETS-SHEET 1.

a TTOHNEY H. W. PLEISTER.

CONCRETE INSERT. APPLICATION FILED OCT. 3.0, 1918.

1,324,846. Patented Dec. 16,1919.

' 2 SHEETS-SHEET 2.

77 wmw 87a) A TTOH/VEY n STATES PATENT oEEioE.

HENRY W. PLEISTER, OF WESTFIELD, NEW JERSEY, ASSIGNOR T0 HENRY B. NEWHALL,

an, ExEouToE 0E HENRY B. NEWHALL, DECEASED.

CONCRETE-INSERT.

Specification of Letters Patent.

Patented Dec. 16, 1919.

Application filed October 30, 1918. Serial No. 260,229.

To all whom it may concern:

Be it known that I, HENRY W.'PLEISTER, a citizen of the United States, residing at Westfield, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Concrete-Inserts, of which the following is a specification, taken in connection with the accompanying drawings.

My invention relates to concrete inserts.

My invention further relates to such a concrete insert in which the insertproper is relatively small for its holding capacity. I am therefore enabled to obtain a concrete insert having the maximum holding capacity with the minimum amount of metal in the casting of the insert. I

My invention further relates to certain details of construction and combinations which will be more fully hereinafter described and set forth in the appended claims.

In the accompanying drawing the same reference numerals refers to similar parts in the several figures.

Figure l is a vertical section through a concrete mold the insert being shown in-end elevation. I

Fig. 2 is a viewsimilar to Fig. 1 showing the concrete insert in side elevation and the mold in vertical section.

Fig. 3 is a vertical section substantially on the line 3, 3 of Fig. 1 showing one form of my concrete insert embedded in the concrete, the form boards being removed.

Fig, '4; is a perspective view of the form of concrete insert illustrated in Figs. 1, 2 and 3.

Fig. 5 is a perspective view of another or modified form of my concrete-insert.

Fig. 6 is a vertical section of another modification of'my invention.

Fig. 7 is a vertical sectionof still another modification of my concrete insert.

In the illustrative embodiments of my invention shown in the drawing 1 is a concrete insert provided with a body portion 2 and two flanges 3 and 4-. the upper flange 3 being provided with holes 5, 5' and the lower flange with holes 6, 6. Each pair of holes 5 and 6 are arranged staggered with relation to each other so that the means to secure the insert to the form boards 7 will be arranged diagonally withrelation to the longitudinal axis of the concrete insert.

In my concrete insert I do not rely entirely upon the flanges 3 and 4 making a secure and firm bond with the concrete 8. When the flanges are relied upon for this purpose the concrete insert has to be large so as to make an adequate bond between the flanges and the concrete to insure that the load placed upon the concrete insert will not pull it from the concrete.

By my invention I make the concrete insert, consisting of the body portion 2 with its flanges 3 and 4:,of the minimum size forv anygiven load and supplement the holding capacity of the flanges 3 and 4 with spikes or nails 9, 9 which pass through the pairs of staggered or diagonal holes 5 and 6, the nails or spikes being somewhat lon-ger than necessary to merely hold the concrete insert 1 to the form board 7 during the act of pouring and tamping the concrete. r

7 By having the ends 10, 10 of the spikes orw nails extending well above the top flange 3 they ,will become embedded inthe concrete 8 and thereby themselves insure a'firm and secure bond between the concrete insert 1 and the concrete. By arranging the nails, or spikes 9, 9 at an angle to each other a firmer fastening is secured as well as a firmer bond. These nails 9, 9 may be the ordinary wire nails of commerce and are commonly made in sizes from 10 penny up to dock spikes. It will therefore be clear thatby the use of such nails the casting forming the. concrete insert 1 can bemade much smaller than it otherwise would be to obtain the same bond or hold in the concrete 8 thereby permitting the saving of a larger quantity of metal in the insert 1.

After the concrete 8 has been poured and tamped the form boards 7, 11, 11 may beremoved in any suitable manner leaving. the insert in the concrete as shown in 3. The ends 12 of the nails or spikes 9, 9'whichj will protrude when the form board 7 is removed may be cut ofl or bent as desired.

The body member 2 is cast hollow and is reamed and tapped to provide the female screw threads 13. I k i l Instead of making my concrete insert as shown in Figs. 1 to 4: inclusive I may make it as shown in Fig. 5.

In this figure the concrete insert 15 is provided with a hollow body portion 16 which is formed with female screw threads 17. In this insert, however, the flanges 18 and 19 are of unequal length, the flanges 18 extending out farther from the body portion 16 than does the flange 19. By locating the holes 20, 20 near the end of each flange the nails or spikes 9, to register with the diflerent holes in the two flanges, have to be driven at an angle to the longitudinal axis of the insert.

In some cases I may entirely omit the lower flange. This will materially decrease the amount of metal required for the insert and will consequently greatly lessen its cost.

In Fig. 6 I have shown such a modified concrete insert 21 in which the body portion 22 is formed hollow and provided with female screw threads 23. The upper portion of the body member is provided with lugs or flanges 24:, 24 in which the holes 25, 25, for the nails or spikes 9, are formed in any suitable manner. Preferably the flanges or lugs 24, 24 are cast substantially at right angles to the body portion 22 and are cast with straight holes 25, 25. This materially reduces the cost of casting.- Then by bending the flanges or lugs 24, 24 the nails or spikes can be driven into the mold board 7, at an angle to the longitudinal axis of the concrete insert.

In some cases I may make my concrete insert with only one flange and not bend it. I have shown such a construction in Fig. 7 in which the body member 26 is formed hollow and provided with female screw threads 27 as in the other forms. The upper portion of the body member is provided with only one flange 28 having holes 29, 29 for the passage of the nails or spikes 9. To more readily permit these spikes or nails to be driven at an incline to the longitudinal axis of the concrete insert I preferably make the holes 29, 29 inclined as shown.

Having thus described the invention in connection with diflerent illustrative embodiments thereof, to the details of which I do not desire to be limited, except as required by the scope of the appended claims, what is claimed as new and what it is desired to secure by Letters Patent is set forth in the appended claims.

1. A concrete insert having a body member provided with spaced flanges in different planes with holes therein in staggered relation with respect to the holes of the adjacent flange.

2. The combination of a concrete insert having a body member provided with spaced flanges in diflerent planes with holes therein in staggered relation with respect to the holes of the adjacent flange, and means extending through said staggered holes and extending out into the concrete to make a firm bond.

3. The combination of a concrete insert having a body member provided with spaced flanges in different planes with holes therein in staggered relation with respect to the holes of the adjacent flange, and nails or spikes to cooperate with said holes and extend out into the concrete.

4. An article of manufacture comprising a concrete insert having a body member pro vided with spaced flanges in different planes and extending out different distances from the body member and provided with holes therein in staggered relation with respect to the holes in the adjacent flange.-

5. The combination in a concrete insert having a body member provided with spaced flanges in different planes and extending out different distances from the body member and provided with holes therein in staggered relation with respect to the holes in the adjacent flange, and nails or spikes to cooperate with said holes.

6. The combination in a concrete insert of the insert proper having a flange removed from its lower end, and nails being longer than necessary to secure the insert to a form board, said nails passing through said flange, at an angle to the longitudinal axis of the insert and having their heads extending out into the mass of the concrete to make an additional and firmer bond between the insert and the concrete.

7. The combination in a concrete insert of the insert proper having a flange removed from its lower end, and nails being longer than necessary to secure the insert to a form board, said nails passing through said flange and extending on both sides of the longitudinal axis of the insert and having shanks projecting beyond the flange to form anchorages.

8. The combination in a concrete insert of the insert proper having a flange at its upper end provided with openings for nails, and nails driven through said openings at an angle to the longitudinal axis of the insert, said nails being of greater length than necessary to secure the insert on the form board, their free ends extending out into the mass of the concrete to make a firm bond.

HENRY W. ILEISTER. 

